Analytical examination on the post-earthquake serviceability condition of steel structures with three types of hysteretic seismic dampers

Abstract

This study is aimed at evaluating the post-earthquake seismic performance of steel frame-typed bridge piers and a steel arch bridge, installed with three types of seismic dampers, namely SMA (Shape Memory Alloy) damper, BRB (Buckling-Restrained Brace) and SPD (Shear-Panel Damper). Seismic dampers are designed to insure that the maximum response strain of the main structure is less than two times of the yield strain, and then the post-earthquake performance of main structure is evaluated by residual displacement.